[gst-devel] Distorted audio capture on Vista

Andoni Morales ylatuya at gmail.com
Sat Feb 6 17:12:40 CET 2010

2010/2/6 Francis Rammeloo <francis.rammeloo at gmail.com>:
> Update:
> directshowaudiosrc works fine on my PC at home that has Windows XP.
> I modified some the ossbuild code so that the directsound plugin also
> contains the directsoundsrc element:
> gst-launch-0.10 directsoundsrc num-buffers=300 ! audioconvert !
> audioresample ! faac ! ffmux_mp4 ! filesink location=test.mp4
> It works fine on my Windows XP machine at home. I'll try it on the
> Vista laptops Monday.
The quality of source elements for Windows are far from being ideal
:). Why don't you add directsounsrc plugin to the build environment
and send us the patch? If this one works better it should have a
higher rank than dshoeaudiosrc to be electable by autoaudiosrc.
> Grts,
> Francis
> 2010/2/5 Francis Rammeloo <francis.rammeloo at gmail.com>:
>> I have been experimenting with audio capture on Windows. I use the
>> following command line:
>> gst-launch-0.10 dshowaudiosrc num-buffers=400 ! audioconvert !
>> audioresample ! faac ! mp4mux ! filesink location=test.mp4
>> I tested this on two Vista laptops using the built-in mic and in both
>> cases the recorded audio was too fast and "crack"-distortions can be
>> heard.
>> On my Macbook Pro running Windows 7 the recording is perfect.
>> The Vista machines are capable of recording good quality audio when
>> using the Acer webcam software tool.
>> I suspect that the issue is with the dshowaudiosrc component because I
>> can also reproduce the problem using other codecs.
>> Does anyone have an idea how things are going wrong? Or better, how to fix it :)
>> Grts,
>> Francis
>> PS: I use the latest WinBuilds GStreamer distribution.
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Andoni Morales Alastruey

LongoMatch:The Digital Coach

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